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olga nikolaevna [1]
3 years ago
10

(FIRST CORRECT FOR BRAINIEST) Solve for x

Mathematics
2 answers:
Katyanochek1 [597]3 years ago
4 0

Answer:

x = 12

Step-by-step explanation:

Angles in a triangle add up to equal 180 degrees

Hence, 10x - 11 + 3x - 2 + 3x + 1 = 180

( note that we just created an equation that we can use to solve for x )

we now solve for x using the equation we created

10x - 11 + 3x - 2 + 3x + 1 = 180

step 1 combine like terms

10 + 3x + 3x = 16x

- 11 - 2 + 1 = -12

we now have 180 = 16x - 12

step 2 add 12 to each side

- 12 + 12 cancels out

180 + 12 = 192

we now have 192 = 16x

step 3 divide each side by 16

16x / 16 = x

192 / 16 = 12

we're left with x = 12

Elena L [17]3 years ago
4 0

Answer:

x=12

the seniot math wiz already explained it correctly

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Harlamova29_29 [7]
Answer: EP is 12 and EO is about 10.91.

To find the length of EP, we can use the Pythagorean Theorem with the 2 legs of the right triangle it would form, EC and CP. CP would be 5 because it is the midpoint of the side.

5^2 + (EP)^2 = 13^2
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Now, to find EO, we write and solve another Pythagorean Theorem equation using 12 for EP.

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One number is 16 more than another number. The two numbers have a sum of 120. Wbich system of equations could you use to find th
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Step-by-step explanation:

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